Multiple-cylinder-grinding apparatus.



C. F. GROW & J. M. COURTNEY.

lMULTIPLE CYLINDER GRINDING APPARATUS. APPLICATION FILED MAR. 30. 191s.

pgina@ @FFME GYBUS F. GROW, OF ALHAMBRA, AND JAMES M. COURTNEY, OF LOSANGELES,

CALIFORNIA.

MULTIPLE-CYLINDER-GRINIDING; APPARATUS.

Speci-eation of Letters Patent.

Patented Oct. 2, 1917.

Application led :March 30, 1916. ySerial No. 87,686.

To all whom t may concern:

Be it known that we, CYRUs F. Gnowand Jamas M. COURTNEY, citizens of theUnited States, residing at Alhambra and LoserAngeles, respectively, inthe county of Los Angeles and State of California, have invented new anduseful Improvements in Multiple- Cylinder-Grinding Apparatus, of whichthe following is a specification.

The invention is an improved automatic machine for grinding the innersurfaces of a plurality of hollow cylinders.

The machine is particularly adapted to grind automatically in oneoperation, the inner surfaces of the cylinders of a multiple cylindergas engine.

A desirable embodiment of the invention is illustrated in theaccompanying drawings in which:

Figure 1 is a side elevation of the machine.

Fig. 2 is a front elevation thereof.

Fig. 3 is a horizontal sectional view of a portion of the machine takenon line :v3- m3 of Fig. 2.

Fig. 4 is a vertical sectional view of a portion of the machine taken online :v4- m4 of Fig. 1. n

Fig. 5 is a horizontal sectional view of a portion of the machine takenon line w5-5 of Fig. 2.

Fig. 6 is an enlarged vertical central section of the crank diskoscillating the work supporting table in a horizontal plane.

Fig. 7 1s a sectlonal detail view of the n gear operating the crankdisk.

with pmlons Fig. 8 is a sectional detail view of the gear for verticallyreciprocating the work sup orting table.

Fig. 9 is a diagrammatic viewillustrating the grinding operation of oneof the grinders of the machine in grinding the inner surface of a hollowcylinder.

The machine comprises a frame formed with a base 1 and a pair ofstandards 2 located respectively at the respective ends of the base.Guides 4 are formed on the front edges of the standards 2, upon whichguides are mounted by means of slides 5, a slidable table 6. Said tableis mounted upon the upper ends of vertical screws 7, which extendthrough the base 1 and on which screw pinions 8, which rest upon thebase 1. Pmions 9, on shaft" 10, rest above and mesh 8, and pinion 11 onsaid shaft meshes with pinion 12 on shaft 13 journaled at one end inbearing 14 on the base 1. The other end of the shaft 13 is coupled tothe shaft of a motor 15 by means of which motor the table `6 is moved,up and down on the guides 4 through the medium of said shafts, pinions,and screws. Crank disks 16 are mounted within recesses in the uppersurface of table 6, on the upper ends of vertical crank shafts 20, thelower ends of which shafts extend through the base. The disks 16 areprovided in their upper surfaces with bolt slots 21 which extenddiametrically of the disks. The head ends of crank bolts 22 t in saidslots, while the Shanks of said bolts extend upwardly through bushings23 in a movable table member 25 which rests 30 are conined between basebearings 31 and brackets 32 so that the shafts 20 may movelongitudinally through the gears as the table 6 is raised and lowered.The movable table member 25 is provided with longitudinal bolt slots 35to receive bolts 36, which are adapted toextend through cleats 37 forengaging the end flanges 38 of the 'cylinders 39, and nuts 40 on theends of the bolts engage thecleats so that the cleats may grip saidflanges and hold the cylinders rigidly in position on the movable tablemember 25.

Y On guides 45 at the upper front portion of the standards 2 is mounted,by

means of slides 46, ahorizontal grinder supporting bar 47. The bar maybe moved to any position o n the guides 45 and secured in such positionby bolts 48 which'extend through the rear of the slides 46 and engagethe rear face of said guides. Grinder heads 50 are horizontallyadjustably mounted on the grinder supporting bar 47 and are held intheir properly adjusted position by bolts 51 ttin in a boltl slot 52 inthe bar 47 and exten ing through ears 53 on said heads,and nuts 54'whichscrew on the ends of said bolts against said ears and bind the v2.0 beapplied to drive ears against said bars. Journaled in bearings 55 on theheads 50 are the vertical grinder spindles 56 on .the lower endsof whichare secured the grinder disks 57, preferably emery wheels, whichy areadapted to engage the inner surface of the engine cylinders 38. Collars60 and 61, secured to the grinder spindles, engage respectively theupper and lower ends of the bearing 55 and prevent vertical movement ofthe spindles and grinder disks during the grinding operation of themachine. leys 65 are splined on the upper portion of the spindles 56around which pulleys extend belts 66 which extend around pulleys 67secured on drive shaft 68 journaled in bearings 69 at the upper rearportion of the standards 2. A pulley 70 is secured on one end of theshaft 68 t0 which power may the grinder disks 57 through the medium ofthe shaft 68, pulleys 67, belt 66, pulleys 65, and spindles 56. Theposition of the grinder disks 57 and the arrangement of the cylinderholding cleats 37 and bolts 35 on the movable table member are such thatthe grinder disks 57 may engagefand grind the same point of the interiorsurface of the engine cylinders 38 as the cylinders are rotated, asshown in Fig. 9, by the motion of the table member 25, whereby theinterior surface of the cylinders are ground alike and to the samediameter. The diameters of the grinder disks 57 may, ofcourse, be variedwith relation to each .other to grind the interior dameters ifdesirable. Durin the grinding operation the disks 57 may lie rotated inthe opposite direction to the direction of rotation of cylinders 38 asindicated by the arrows in Fig. 9 which provides a highly effective anddesirable grind' As the grinder disks and the cylinders-are rotated withrelation to each other as described, the cylinders are raised andlowered bythe reciprocation of the by tl1 e grinder disks are caused togrind the interior surface of the cylinder progressively from one end tothe other.

50 By securing the bolts 22 at different positions in thel disk slots 2lthe motion of the movable table member 25 may be varied to grindcylinders of different diameters.

e c aim:

1. grinding machine for grinding a plurality of integral cylindersarranged side by side, comp ising a plurality of grinding elements for(grinding the interior surfaces of .said cylin ers, a table for holdingsaid cylinders while v being ground, and means for moving said table tocause said grinding lements to grind the interior of said cyliners. a

2. A grinding ,machine for grinding' a plurality of integral cylindersarranged side Pulminced by side, comprising a table for holding thecylinders, a plurality of grinding elements for grinding the interiorsurfaces of said cylinders, means for shifting said table-horizontally,and means formoving said table vertically to cause said grindingelements to grind the interior of said cylinders.

A grinding machine, comprising a grinding element, a table, a movabletable member for supporting the work, a crank shaft journaled in saidtable, a crank element on said shaft engaging said movable tableelement, means for moving said table and table member'toward thegrinding element, and means for rotating said crank shaft and crank tomove saidmovable table member to rotate the work, said grinding elementbeing adapted to gr' d the work as it is rotated and reciprocated. v

4. An automatic machine for grinding the interior surface of thevcylinders of a multiple cylinder gas engine, comprising a slidabletable,a movable table member mounted on said table, means for securingthe cylinders of a multiple gas engine on said movable table member,grinding elements adapted to engage respectively the interior surfacesof said cylinders, means for actuating said grinding element, means foractuating said movable table member to rotate said cylinders withrelation t0 said grinding element, and means for moving said table andtable member longitudinally with relation to said grinding element.

An automatic machine for grinding the interior surfaces of the cylindersof a multiple cylinder gas engine, comprising a frame, a table slidablymounted on said frame,.a movable table mounted on said slidable table,means for securing the cylinders of a multiple gas engine on saidmovable table member, a plurality .of heads mounted on said frame, aspindlejournaled in each of said heads, a grinding disk secured on eachof said spindles adapted to engage the inner surface of a cylinder ofsaid engine, means for rotating saidspindles and disks to cause saiddisks to grind the inner surfaces of said cylinders, means for actuatingsaid movable table member to rotate said cylinders with relation to saidgrinding element, and` means for moving said table and table memberlongitudinally with relation to said grinding element.

6 An automatic machine for grinding the interior surfaces of thecylinders of a multiple cylinder gas engine, comprising a slid'- abletable, a movable table member mounted on said table, means for securingthe cylinders of a multiple gas engine on said movable table member,grinding elements adapted to v engage res ectively the interior surfacesof said cylin ers, means -for actuating said grinding elements, a screwjournaled in said tab1e,imeans for rotating said screw to move 180 saidtable, table member and said cylinders longitudinally With relation tosaid grinding element, a shaft journaled in said table, a crank on saidshaft connected to said movable table member, and intermeshing pinionson said screw and crank shaft Whereby said shaft is rotated and saidmovable table member is actuated to rotate said cylinders with relationto said grinding element. I

7. A grinding machinefor grinding a plurality of integral cylindersarranged side by side, comprising a plurality of grinding elements forgrinding the interior 'surfaces of said cylinders, a table for holdingsaid cylinders while being ground, means for moving said table to causesaid grinding elements to grind the interior of said cylinders,

and means for adjusting said grinding elements with relation to theinterior of said cylinders.

8. A grinding machine for grinding a plurality of integral cylindersarranged side by side, comprising a table for holding the cylinders, aplurality of grinding elements for grinding the interior surfaces ofsaid cylinders, means for shifting said table horizontally, means formoving said table vertically to cause said grinding elements to grindthe interior of said cylinders, means for adjusting said grindingelements with relation to the interior of said cylinders, and means foradjusting the shifting movement of said table.

In testimony whereof We have signed our names to this specification.

GROW,

CYRUS F. JAS. M. COURTNEY.

